FR2382798A1 - LINEARIZATION CIRCUIT - Google Patents

LINEARIZATION CIRCUIT

Info

Publication number
FR2382798A1
FR2382798A1 FR7806048A FR7806048A FR2382798A1 FR 2382798 A1 FR2382798 A1 FR 2382798A1 FR 7806048 A FR7806048 A FR 7806048A FR 7806048 A FR7806048 A FR 7806048A FR 2382798 A1 FR2382798 A1 FR 2382798A1
Authority
FR
France
Prior art keywords
input
attenuator
terminal
linearization circuit
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7806048A
Other languages
French (fr)
Other versions
FR2382798B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of FR2382798A1 publication Critical patent/FR2382798A1/en
Application granted granted Critical
Publication of FR2382798B1 publication Critical patent/FR2382798B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator

Landscapes

  • Amplitude Modulation (AREA)
  • Transmitters (AREA)

Abstract

Circuit de linéarisation destiné à établir une relation non linéaire entre un signal d'entrée et un signal de sortie, de préférence pour compenser le défaut de linearité d'un modulateur de fréquence. Il comporte un atténuateur D constituant l'entrée du circuit, un diviseur de tension comportant deux résistances linéaires R1 et R2 et un élément résistant non linéaire R dont la résistance varie avec le courant passant dans cet élément, et un amplificateur F dont l'entrée est connectée à une borne de l'élément R alors que la sortie de l'atténuateur est connectée à l'autre borne de cet élément Domaine d'application : transmissions radio.Linearization circuit for establishing a non-linear relationship between an input signal and an output signal, preferably to compensate for the lack of linearity of a frequency modulator. It comprises an attenuator D constituting the input of the circuit, a voltage divider comprising two linear resistors R1 and R2 and a nonlinear resistance element R whose resistance varies with the current flowing in this element, and an amplifier F whose input is connected to one terminal of element R while the output of the attenuator is connected to the other terminal of this element Field of application: radio transmissions.

FR7806048A 1977-03-03 1978-03-02 LINEARIZATION CIRCUIT Granted FR2382798A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7702344A SE398946B (en) 1977-03-03 1977-03-03 LINEARIZING NET

Publications (2)

Publication Number Publication Date
FR2382798A1 true FR2382798A1 (en) 1978-09-29
FR2382798B1 FR2382798B1 (en) 1984-10-26

Family

ID=20330603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806048A Granted FR2382798A1 (en) 1977-03-03 1978-03-02 LINEARIZATION CIRCUIT

Country Status (6)

Country Link
US (1) US4140981A (en)
AU (1) AU514998B2 (en)
BR (1) BR7801288A (en)
FR (1) FR2382798A1 (en)
MX (1) MX143918A (en)
SE (1) SE398946B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160149A2 (en) * 1984-04-23 1985-11-06 Hewlett-Packard Company Pre-distortion shaping networks
EP0563440A1 (en) * 1992-03-31 1993-10-06 Robert Bosch Gmbh VCO frequency modulator with low frequency deviation

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277763A (en) * 1978-02-21 1981-07-07 Ward Jr William H Non-linear predistortion linearizing circuit for a varactor diode tuned oscillator
US4500984A (en) * 1982-09-29 1985-02-19 International Telecommunications Satellite Organization Equalizer for reducing crosstalk between two FDM/FM carriers in a satellite communications system
US4633197A (en) * 1985-03-29 1986-12-30 Motorola, Inc. Single resonant tank modulated oscillator
US4864257A (en) * 1988-09-15 1989-09-05 General Electric Company Phase locked frequency synthesizer with single input gain compensated wideband modulation system
US4866404A (en) * 1988-09-15 1989-09-12 General Electric Company Phase locked frequency synthesizer with single input wideband modulation system
DE102006061511A1 (en) * 2006-12-18 2008-06-26 Atmel Germany Gmbh Circuit arrangement for frequency modulation has voltage controlled oscillator with varactor diode, which is controlled by control signal and capacitance of varactor diode depends on control signal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB653099A (en) * 1948-06-22 1951-05-09 British Broadcasting Corp Improvements in and relating to valve amplifiers
US3519954A (en) * 1967-07-10 1970-07-07 Marconi Instruments Ltd Linearising circuit arrangements for voltage-sensitive capacitance diodes
US3617947A (en) * 1964-10-29 1971-11-02 Garold K Jensen Wide band frequency modulator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015079A (en) * 1973-06-12 1977-03-29 Tokyo Shibaura Electric Co., Ltd. Gamma correction circuit
US3986048A (en) * 1973-08-10 1976-10-12 Sony Corporation Non-linear amplifier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB653099A (en) * 1948-06-22 1951-05-09 British Broadcasting Corp Improvements in and relating to valve amplifiers
US3617947A (en) * 1964-10-29 1971-11-02 Garold K Jensen Wide band frequency modulator
US3519954A (en) * 1967-07-10 1970-07-07 Marconi Instruments Ltd Linearising circuit arrangements for voltage-sensitive capacitance diodes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160149A2 (en) * 1984-04-23 1985-11-06 Hewlett-Packard Company Pre-distortion shaping networks
EP0160149A3 (en) * 1984-04-23 1987-04-01 Hewlett-Packard Company Pre-distortion shaping networks
EP0563440A1 (en) * 1992-03-31 1993-10-06 Robert Bosch Gmbh VCO frequency modulator with low frequency deviation

Also Published As

Publication number Publication date
MX143918A (en) 1981-07-31
SE398946B (en) 1978-01-23
US4140981A (en) 1979-02-20
BR7801288A (en) 1978-10-31
AU3355778A (en) 1979-08-30
FR2382798B1 (en) 1984-10-26
AU514998B2 (en) 1981-03-12

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Legal Events

Date Code Title Description
ST Notification of lapse